陈四楼矿综采工作面采场应力监测及演化规律研究  

Research on monitoring technique and evolution law of the disturbance stress in Chensilou Colliery

作　　者：周钢[1] 李玉寿[1] 张强[1] 邹长磊 王超[1] 尹雄[1] 樊佛佑 

机构地区：[1]中国矿业大学深部岩土力学与地下工程国家重点实验室,江苏徐州221116 [2]江苏思恒智能科技有限公司,江苏徐州221008

出　　处：《煤炭学报》2016年第5期1087-1092,共6页Journal of China Coal Society

基　　金：国家自然科学基金资助项目(51174196)

摘　　要：简述了目前煤矿井下采场应力监测现状,分析了钻孔应力解除法存在的问题。采用空心包体应力测量技术,在原岩地应力实测基础上监测采动应力的演化过程,探究采动应力影响下工作面覆岩及巷道围岩应力的动态变化规律。测量结果表明:实测原岩地应力的最大主应力以铅垂应力为主,在采动过程中随着超前支承应力峰值区距离测点越来越近,最大主应力方向与水平面夹角逐渐减小,接近应力降低区时又逐渐增加;随着工作面推进,采动应力值不断增大,距测点136 m达最大值,约为原岩应力的3.29倍,而后进入应力稳定区。原岩应力测量和采动应力监测为2者相互作用关系研究提供了理论基础,对回采巷道围岩稳定控制具有重要指导意义。This paper outlines the current status of crustal stress measurement,and analyzes the existing problems ofhollow inclusion strain stress relief method. Using the hollow inclusion strain cells measurement technique,the evolu-tion of mining dynamic pressure is monitored based on original rock stress measurements. The results show that the di-rection of maximum principal stress is mainly in vertical stress,its peak area changes from initial near-vertical directionto nearly horizontal direction,and then fades to near vertical when closing to the stress-reducing region. The disturb-ance stress increases with the working face advances,and reaches the maximum value at 136 m away from measuringpoint which is 3. 29 times of the original rock stress,and then it stabilizes. The measurement of original rock stress anddisturbance stress provides a theoretical basis for the study of their interaction,and has a guiding significance to the re-search of roadway stability control.

关 键 词：地应力测量 采动应力 演化规律 监测技术 

分 类 号：TD311[矿业工程—矿井建设]